Run your entire business
from one platform.

BusinessOS unifies invoices, clients, staff, inventory, payroll, appointments and 40+ tools into a single, elegant workspace, running 100% offline, with every byte of data private on your own device.

No credit card required Works with zero internet Data stored locally, always
businessos · local workspace · offline-readyLive softwareOpen full screen ↗
40+
Business tools in one place
70+
Industries supported
100%
Offline & private
0
Bytes ever leave your device

Designed for businesses across 70+ industries

One platform

Everything your business runs on,
beautifully unified

Stop paying for a dozen disconnected software tools. BusinessOS brings your whole operation into a single, fast workspace.

Finance & reporting

Real time profit & loss, budgets, expenses and exportable reports, always up to date, always yours.

  • Profit & loss
  • Budgets & expenses
  • Recurring billing
  • Exportable reports

Invoicing, payments & point of sale

Create professional invoices and receipts, take payments, and run POS sessions with a full cash drawer history, in seconds, from one screen.

Clients & CRM

Every customer, their history, notes and contacts in one organized place.

Staff & payroll

Clock ins, hours, roles, commissions and payroll runs for your whole team.

Inventory & appointments

Track stock and products with low stock alerts, and keep your calendar full with scheduling and waitlists.

Growth & loyalty

Leads pipeline, gift cards, loyalty points and promo codes to bring customers back, plus warranties, returns and contracts.

LeadsLoyaltyGift cardsPromosReviewsVendorsPurchase ordersReturnsWarrantiesContracts
Privacy by design

Your data lives on your machine, not someone else's cloud

Most business software holds your data hostage on a remote server and bills you every month for the privilege. BusinessOS takes the opposite approach.

Stored 100% locally

Clients, invoices and financials are saved on your own device, never uploaded, tracked or shared.

Fully offline

Every feature works with no internet at all, perfect for shops, job sites and unreliable WiFi.

No accounts, no lock in

There's no login server and nothing phoning home. Your business, your data, your control.

Private by default
Not a single byte of your business data ever leaves your computer.
🔒 Local storage📶 Offline first🚫 No tracking♾️ No cloud
Up and running in minutes

Live in three simple steps

No IT team, no setup fees, no complicated configuration.

Open the software

Launch BusinessOS on your computer. Pick your industry in a quick setup wizard and it tailors itself to your business.

Add your info

Enter your clients, staff, products and services. Everything you type is saved locally on your device, instantly and privately.

Run everything

Invoice, book, check out and report from one screen. No internet needed and nothing ever leaves your computer.

"The software you run your business on should be fast, private, and entirely yours, not a subscription that watches over your shoulder."
The principle behind BusinessOS
Why it pays off

One place to run it all, and real money back in your pocket

Most businesses quietly bleed cash across half a dozen monthly subscriptions that barely talk to each other. BusinessOS folds them into a single piece of software you own, so you stop paying rent on your own data, and stop losing hours moving it between tools. The subscription prices shown below are illustrative examples of common tool pricing, not quotes.

The usual way · 6-8 subscriptions
Accounting & invoicing$35/mo
Point of sale$60/mo
Payroll$45/mo
Clients & CRM$50/mo
Inventory$40/mo
Scheduling & booking$25/mo
Reporting$20/mo
Typical stack≈ $3,300/yr
With BusinessOS · one place
Finance, invoicing & point of sale
Payroll, staff & time tracking
Clients, CRM, inventory & scheduling
Reporting, all from one dashboard
Runs offline · your data stays on your device
No monthly stack. No per-tool fees. Pricing is tailored to your business and quoted once, keep what you would have paid every month.
Calculate your savings

How much could your business save?

This takes the ~$3,300/yr in subscriptions you cancel above and adds the value of the time your team gets back. Slide to match your business, the results update instantly.

Your business

Drag each slider to match how you work.

Your estimated savings
$0
Estimated savings per year
0
Hours saved / week
$0
Saved / week
$0
Saved / month

Figures are illustrative estimates. Time savings are the hours your team stops losing to switching tools and re-typing data; money savings value those hours at the pay you set, plus the monthly subscriptions BusinessOS replaces. Your actual savings depend on the tools you replace, your team size, and how your team works.

Full access · No compromises
Try everything free for 30 days

Test drive the complete platform, every feature, fully unlocked, for a full 30 days. No credit card, no watered down demo, no strings attached. If it's not right for you, simply stop using it.

Every feature unlocked No credit card required Your data stays on your device
Start My Free 30-Day Trial
Free trial · pricing tailored to you

Start your free trial

Get the full platform free for 30 days, every tool unlocked, no credit card required. Tell us a bit about your business below and we'll set up your trial and send pricing tailored to it.

By requesting a trial you agree to be contacted about BusinessOS. Your information is only used to set up your trial and prepare your pricing.

Thanks, your request has been sent!

We've received your details and will set up your trial and reply with your pricing shortly.

Good questions

Frequently asked

Where is my data stored?

Entirely on your own computer. BusinessOS saves everything locally on your device, your clients, invoices, staff and financials never get uploaded to any server or cloud. You stay in complete control of your information.

Does it really work without internet?

Yes. BusinessOS is built to run 100% offline. Once it's on your computer you can use every feature with no internet connection at all, perfect for shops, job sites and anywhere the WiFi is unreliable.

What does the 30 day free trial include?

Everything. The trial is the full product with every feature unlocked for 30 days, not a limited demo. No credit card is required to start, and there's no compromise on functionality.

How much does it cost?

Start with a free 30 day trial, no card required. Pricing is tailored to your business, so fill out the quick trial form above with your details and price range, and we'll send you pricing that fits, no obligation.

What kind of businesses is it for?

Almost any small or growing business, restaurants, salons, gyms, auto shops, cleaning and landscaping crews, retail stores, clinics, spas and more. A quick setup wizard tailors the software to your industry.

How do I get started?

Click any "Start My Free 30-Day Trial" button and email us, we'll send you the download so you can begin your free 30 day trial right away.

The operating system
for your business.

Start your free 30 day trial today. No credit card. No cloud. No compromises.

Start My Free 30-Day Trial
← Back to BusinessOS

Company, policies & support

Everything governing how BusinessOS is licensed, supported and maintained, together with details of the company responsible for it.

Trust & transparency

Policies, support and company information

The terms under which BusinessOS is licensed, supported and maintained, and the company responsible for it.

Published by Legacy Builders Systems LLC
Product version BusinessOS v1.0
Runs on Windows, macOS, Linux, ChromeOS
Privacy Policy

BusinessOS is published by Legacy Builders Systems LLC ("the Company"). This policy sets out the Company's practices regarding the collection, use and retention of information.

Data entered into the BusinessOS software

All records created within BusinessOS — including client, invoice, payment, personnel, payroll, inventory, appointment and financial data — are stored exclusively in the local browser storage of your own device. Such data is not transmitted to the Company, is not held on Company servers, and is not accessible to the Company under any circumstances. The software operates without user accounts and without an authentication server. Please note that removal of the software, or clearing of browser storage, without a prior data export will result in the permanent loss of that data, which the Company is unable to recover.

Information submitted through this website

Where you complete the trial request form, the name, telephone number, email address, business name, industry and price range provided are delivered to the Company by email via Web3Forms, a third-party form delivery service. In the event that service is unavailable, the form defaults to your own email client so that the same details may be sent directly. This information is used solely to establish your trial, prepare pricing and respond to your enquiry. It is not sold, leased or disclosed for advertising purposes.

Third-party services engaged by this website

This website loads Google Fonts and an optional Google Translate component, and submits the trial request form through Web3Forms. In the ordinary course of serving these requests, such services may receive your IP address and standard browser information. The BusinessOS software makes no calls to these or any other external services once installed on your device.

Cookies and tracking

The Company does not operate advertising trackers or analytics profiling on this website. The BusinessOS software uses your browser's local storage solely to retain your business records and application settings on your own device.

Your rights

You may export a complete copy of your data at any time via the Settings screen, and may delete it at any time by clearing the software's local storage. To request details of information held in connection with a trial enquiry, or to request its deletion, please contact legacy.builders.systems@gmail.com.

Terms of Use

By downloading, installing or using BusinessOS, you accept and agree to be bound by the following terms.

Grant of licence

Legacy Builders Systems LLC grants you a non-exclusive, non-transferable licence to use BusinessOS in the operation of your own business. The licence is acquired by a single purchase and is not subject to recurring subscription charges. You may not resell, sublicense, lease or redistribute the software, remove or alter its proprietary branding, or attempt to circumvent its trial period or activation controls.

Customer obligations

As BusinessOS retains all data on your own device, you are responsible for the security of that device and for maintaining adequate backups of your records. You are further responsible for ensuring your use of the software complies with applicable law, including all tax, payroll, employment and record-retention obligations relating to your business.

Exclusion of professional advice

BusinessOS is a record-keeping and business operations tool. Reports, payroll calculations and financial outputs generated by the software are provided for internal management purposes only and do not constitute accounting, tax or legal advice. You are advised to obtain review by a suitably qualified professional before filing or otherwise relying upon such outputs.

Warranties and limitation of liability

The software is supplied on an "as is" basis. The Company does not warrant that its operation will be uninterrupted or free from error. To the fullest extent permitted by applicable law, Legacy Builders Systems LLC shall not be liable for loss of profit, loss of data, or any indirect or consequential loss, and the Company's aggregate liability shall not exceed the licence fee paid.

Amendment and termination

The Company may amend these terms from time to time and will publish the revised version on this page bearing an updated revision date. The Company reserves the right to terminate any licence used in breach of these terms.

These terms are governed by, and shall be construed in accordance with, the laws of the state in which Legacy Builders Systems LLC is registered.

Refund & Cancellation Policy

The complimentary 30-day trial constitutes the evaluation period, and all licence purchases are final.

Prior to any payment, customers are provided with the complete product, with all features unlocked, for a full 30-day period and without requirement of a payment card. This trial is provided expressly so that suitability may be assessed before purchase. Accordingly, refunds are not issued on licence purchases once payment has been received.

Cancellation

No subscription exists and therefore no cancellation is required. Should you determine during the trial period that BusinessOS is not suitable for your business, you may simply discontinue use; no charge is incurred and no notice is necessary. Requests for the removal of trial enquiry details from Company records will be actioned upon receipt.

Technical remedy

In the event that the software fails to operate correctly on your system following purchase, the Company will work with you toward resolution. Please contact legacy.builders.systems@gmail.com, stating your business name and a description of the issue.

Support Information

Technical support for BusinessOS is provided by Legacy Builders Systems LLC via email.

Contact channels

Support enquiries should be directed to legacy.builders.systems@gmail.com. The support assistant available on this page additionally provides immediate responses to frequently asked questions and may be used to submit a support request on your behalf.

Information required

To enable resolution at first response, enquiries should state the business name, the module or screen in use, the expected behaviour, the behaviour actually observed, and the browser and operating system in use.

Scope of support

Support covers installation and configuration, guidance on module functionality, industry configuration, data import and export, activation issues, and the investigation of defects in the software. Support does not extend to bookkeeping, taxation or legal advice, nor to the recovery of data from a device for which no backup was exported.

Trial Expiration

The BusinessOS trial provides the complete product, with all features unlocked, for a period of 30 days. No payment card is required to commence the trial.

Calculation of the trial period

The trial period commences automatically upon the first launch of the software on your device, rather than on the date of request. Throughout the trial, a countdown indicator is displayed within the application showing the time remaining, ensuring the expiry date is known in advance.

Effect of expiry

Upon conclusion of the 30-day period, BusinessOS enters a locked state and presents an activation screen. Customer data is not deleted. All records remain stored in the local storage of the device and become accessible again immediately upon activation of the software.

Continuation of use

To continue using the software, please contact the Company to purchase a licence, whereupon an activation code will be issued to unlock the software permanently on that device. As a precautionary measure, the Company recommends exporting a JSON backup prior to the expiry of the trial period.

Backup & Data Export

As customer data resides solely on the customer's device, responsibility for the creation and retention of backups rests with the customer.

Exporting a backup

Within BusinessOS, open Settings and select Export JSON Backup. The software generates a single dated file, businessos-backup-YYYY-MM-DD.json, containing all records held in the system. This file should be retained in a secure location, such as an external drive or a storage service of your choosing.

Restoring a backup

From the same Settings screen, select Import JSON Backup and specify a previously exported file. This procedure is also used to transfer a business to a replacement computer or an alternative browser.

Reports and printed records

Individual reports, invoices and receipts may additionally be printed or saved as PDF from their respective screens, which may be of assistance when providing records to an accountant.

Recommended practice

The Company recommends exporting a backup on a weekly basis, and in all cases prior to changing devices, clearing browser data or reinstalling the software. As the Company at no point receives a copy of customer data, it is unable to effect restoration where a device is lost and no backup exists.

Implementation & Onboarding

BusinessOS is designed for deployment on the date of receipt. No server provisioning is required and no IT implementation project is necessary.

1. Initial configuration

On first launch, a short configuration screen records the principal details of the business together with its industry. This selection configures BusinessOS to the operational requirements of the business and may be amended subsequently within Settings.

2. Guided product tour

An integrated walkthrough introduces the dashboard and principal modules in sequence. It may be reopened at any time via System Tour in the sidebar, which is of particular use when onboarding new personnel.

3. Migration of existing records

Client, personnel, product and service records may be entered directly, or a JSON backup may be imported where migrating from another device. Sample data is available from Settings to permit familiarisation with the software before live records are entered.

Assistance during implementation

Should assistance be required at any stage of implementation, please contact legacy.builders.systems@gmail.com and the Company will provide guidance.

Product Version

The current release is BusinessOS v1.0. The version installed on a given device may be confirmed within the software under Settings → Version.

As BusinessOS operates entirely on the customer's device, updates are issued as a replacement file rather than deployed automatically, leaving the timing of any update at the customer's discretion. Customers should export a JSON backup prior to updating and import it into the new version thereafter.

Supported Operating Systems

BusinessOS operates within a current web browser on the customer's own computer and functions entirely offline once installed. It is therefore not restricted to a single operating system.

Operating systems

Windows 10 and Windows 11, macOS, Linux and ChromeOS.

Browsers

A current release of Google Chrome, Microsoft Edge, Safari or Firefox. The software requires permission to use local browser storage, which is enabled by default.

Hardware requirements

Any computer capable of running one of the browsers specified above. The interface is designed for desktop and laptop displays; tablet devices are supported, although a full-size display is recommended for daily operation.

Network requirements

An internet connection is required only for the initial receipt of the software and for subsequent updates. Routine operation requires no connectivity.

Artificial Intelligence in Product Development

Legacy Builders Systems LLC believes customers are entitled to understand how the software they depend on was produced. Accordingly, we disclose that portions of BusinessOS were developed with the assistance of artificial intelligence tools.

Scope of use

AI-assisted tooling was employed during development to support the authoring and refinement of selected portions of the software's source code, user interface and written content. These tools formed part of our development toolchain, alongside conventional instruments such as compilers, code libraries and design software.

Accountability

Product direction, design decisions and final approval remain the responsibility of Legacy Builders Systems LLC. All released functionality is reviewed and tested by the company prior to distribution, and we accept full responsibility for the finished product irrespective of the tools used in its creation. Any defect identified in the software should be reported to support, and will be addressed by us.

No artificial intelligence operates within the software

BusinessOS does not transmit customer data to any artificial intelligence service. No AI model is embedded in or executed by the product, and no client, invoice, personnel or financial record is used to train any model. The software operates entirely offline on your device, consistent with the terms set out in our Privacy Policy.

Website support assistant

The support assistant provided on this website is not an artificial intelligence model. It responds from a predefined set of written answers contained within this page, operates without a network connection, and transmits no information unless you elect to submit a support request.

About the Company

BusinessOS is developed and published by Legacy Builders Systems LLC, a limited liability company registered in the United States.

The Company develops business software that customers own outright and operate on their own hardware, in preference to software leased on a recurring basis from a cloud provider. This principle governs the Company's product decisions: customer records remain on the customer's device, no account exists from which a customer may be excluded, and no subscription requires cancellation.

Contact

General enquiries and support: legacy.builders.systems@gmail.com

All correspondence is conducted by email, and the Company responds to every enquiry received.

These policies were last revised on 30 July 2026 and apply to BusinessOS v1.0. Enquiries concerning any of the above may be directed to legacy.builders.systems@gmail.com.